This is my mother's variation on the old Chex Mix holiday standard snack. It's not what you would call "low fat", but our kids absolutely demand that I make it every year. In fact, I have some in the oven right now, because our daughter called and pleaded that I ship some to her at college. We usually make several of these huge batches and freeze some for the summer months.
UPDATE: In recent years, I've modified this just a bit, cutting back on the oil to a little over ONE cup, while increasing the Worcestershire Sauce to 1/4 cup (plus an extra splash or two!)